Tube Cage with Tall Tubes

I've seen some discussion here regarding the ability to use a tube cage with a tall GZ33 rectifier but I've never seen a conclusion as to whether it will fit or not. Can somebody with a tube cage measure the clearance? Looks like the GZ33 is about 5" base to top. Thanks!

baddog1946 wrote:Hi:Those KT-120's also measure out to be right at 12 cm. (5")tall.Baddog1946

Hi Baddog,

You know, I just measured a KT120 and it measured out at about 4 5/8" tall. A KT120 will probably fit under the cage although I have not tried it ? When that cage is all the way down you have *about* 4 3/4 - 4 7/8 inches of clearance under the cage. The GZ33 definitely won't fit under there but I think a Tung-Sol KT120 will.

If anyone is running a KT120 Tung-Sol (which is a pretty tall tube also) on an ST-120 let me know if it will fit under the cage? I *think* it will. If I have time tomorrow I will try a KT120 under the tube cage and double check that the cage doesn't bang on to the top of the the KT120.

Hi Bob:I just tried it and it seems like it does actually fit with a thin hair to spare (I would say about 1/8" on my amp) but IMHO it is still too close for comfort. The metal of the cage could act like a heat sink to overheat the tube with such close proximity Those 120's throw a lot of heat.I will not use the cover when they are in use. Better safe than sorry.Baddog1946